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0. V. BAUER.

ROTARY PLACER QOLD SEPARATOR. APPLICATION FILED NOV. 4, 1916.

1,303,233 Patented May13,1919.

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ROTARY PLACER GOLD SEPARATOR.

APPLQCATIOY'N mm NOV. 4. 19:6.

Patented May13, 1919.

2 SHEETS S-HEET 2- witness UNITED STATES PATENT OFFICE.

OTTO V. BAUER, ALAMOSA, COLORADO, ASSIGNOR OF ONE-NINTH 'IO HENRY J.

BAILEY, ONE-NINTH T OEHER L. BIGELOW, ONE-NINTH TO WALTER E. CAMP- BELL, ONE-NINTH TO CLAUDE A. SMITH, ONE-NINTH TO JESSE Gr. GRIFFIN, ONE- NINTH TO ALGIE R. GREINER, ONE-NINTH TO PHILIP F. VOIG-T, AND ONE-NINTH TO HENRY C. STEVENS, ALL OF ALAMOSA, COLORADO.

ROTARY PLACER-GOLD SEPARATOR.

Specification of Letters Patent.

Patented May 13, 1919.

Application filed November 4,1916. Serial No. 129,482.

To all whom it may concern:

Be it known that I, Or'ro V. BAUER, a citizen of the United States, residing at Alamosa, in the county of Alamosa and State of Colorado, have invented certain new and useful Improvement-s in Rotary Placer-Gold Separators; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

The" invention relatesto a rotary placer gold separator.

The object of the present invention is to improve the construction of gold separators and to provide a simple, practical and eflicient rotary placer gold separator ofstrong, durable and inexpensive construction adapted for separating niill'concentrates as well as placer gold and equipped with means for successively subjecting the contents of the separator to the action of the same so as to effect a thorough separation and saving of the values.

With these and other objects in view, the invention consists in the construction and novel combination of parts hereinafter fully described, illustrated in the accompanying drawing, and pointed out in the claims hereto appended; it being understood that various changes in the form, proportion, size and minor details of construction, within'the scope of the claims, may be resorted to without departing from the spirit or sacrificing any of the advantages of the invention.

In thedrawings Figureil is a front elevation of'a rotaryplacer gold separator constructed in accordance with this invention,

Fig. 2 is a side elevation of the same,

- Fig. 3 is a plan view of the rotary gold separator, i.

Fig. 4: is a vertical sectional view on the line H ofFig. 1,

Fig. 5 is a detail sectional view illustrating the manner of slidably interlocking the adjustable arms with the turn table...

Like numerals of reference designate corresponding parts in the several figures of the drawings.

In the accompanying drawings in which is illustrated the preferred embodiment ofthe invention, the rotary gold separator comprises in its construction, a supporting frame or stand 1, composed of spaced sides having vertical and inclined portions 2 and 3 and a horizontal bottom bar 4 secured to the vertical and inclined portions 2 and 3 which are preferably formed integral with each other and connected at the top as shown. The sides of the frame are also connected by inclined cross transversely disposed bars or braces 5 centrally connected and having their terminals secured to the vertical and inclined bars 2 and 3 at 6 and 7 A pair of the oppositely inclined transverse bars or braces 5 is preferably provided for the vertical bars and the inclined bars.

. The sides of the frame are provided at their upper portions with bearings 8 for the reception of terminal journals 9 of a transverse axle or pivot 10 which is provided with a central bearing opening 11 for the reception of a shaft or spindle 12-. The shaft 12 which is journaled in the opening 11 is preferably formed integral with the turntable 13 provided also with an integral gear wheel '14 located at the upper end of the shaft 12 which has an enlargement 15. The enlargement 15 is located above and spaced from the transversely disposed horizontally arranged pivot 10, a bushing 16 being interposed between the enlargement 15 of the shaft 12 and the horizontal pivot orv axle 10.

The gear wheel which is arranged horizontally when the shaft 12 is vertical meshes with a vertical pinion 17 suitably fixed to a horizontal operating shaft 18 which is journaled in spaced bearings 19 of the shaft or axle 10. The separator is preferably equipped with bevel gears and the operating shaft 18 is provided at its outer end with a crank 20 or other suitable operating device. By rotatingthe horizontal shaft 18 rotary motionis communicated to the turn table through the gearing and a pan 21 which is carried by the turn table is rotated. The turn table is adapted to receive pans of different diameters and in order to enable different sizes of pans 21 to be held by the and secured in their adjustment by set screws 24 piercing the turn table adjacent to the outenedge thereof and engaging the lower faces .of the adjustable arms. The adjustable arms are tapered transversely as clearly illustrated in Fig. of the drawings to fit the dove-tailed ways but any other suitable means may of course be employed for slidably mounting the radially adjustable arms on the turn table. The radially adj ustable arms are provided at their outer ends with upwardly pro ecting portions'25 which fit against the outer faces of the walls of the pans. By this arrangement the pan is firmly held on the turn table and the latter is adapted to be adjusted and set at any desired angle between a horizontal and 45 degrees tothe vertical. The inclined portions 3 of the sides of the frame are adapted to support the pan when the same is at the limit of its angular adjustment. The pan is tilted downwardly toward the inclined members of the supporting frame, as shown in dotted lines in Fig. '2, and it is designed to be constructed of copper and to be coated at the bottom with quicksilver and in order to enable the material to be carried up the inclined sides the pan is equipped with a removable riiile ring 26 having radially arranged riftles 27" terminating short of the center of the pan and extending inwardly from the side walls thereof. The riflies are adapted to carry the material up one side of the pan when the same is set at an inclination and it will upon reaching the top of the pan slide downward over the bottom thereof centrally of the same between the annular series of riffies and by the rotary movement of the pan the material maybe subjected to the action of the quicksilver on the bottom of the pan as often as desired or required to effect the complete separation of the gold. WVhen the bottom of the pan becomes loaded with gold it is scraped off and placed in a retort for separation from the mercury.

Both the pan and the riflle ring arereadily removable and the turn table is detachably held in the bearing 11 of the horizontal pivot by a nut 28 which engages a threaded portion 29 of the shaft 12. Variouseother means may be employed for detachably mounting the turn table on the frame and instead of operating the rotary placer'g'old separator by hand any suitable power may beemployed.

What is claimed is 1. An apparatus of the character described, comprising a frame, an axle pivotally carried thereby, a rotary pan carried by said axle, a rifile ring disposed within said} pan and having inwardly extending Gopiesot this patent may be obtained for arms terminating short of the axis of said pan, means to rotate said pan, said pan being adapted to assume an inclined position, and a support carried by said frame and adapted ed for supporting said pan in an inclined position.

2. An apparatus of the character described comprising, a frame, an axle pivotally carried thereby, a vertical shaft journaled through said axle, a rotary pan carried by said vertical shaft, means to rotate said pan, a riflie ring disposed within said pan and having a plurality of inwardly extending riflies terminating short of the radius of said pan and adapted for supporting said pan when in an inclined position.

3. An apparatus of the character described comprising, a frame, an axle pivotally carried thereby, a rotary pan carried by said axle, a bevel gear having connection with said rotary pan, a power shaft carried by said axle, a pinion carried by said power shaft and meshing with said bevel gear, and a support carried by said frame and adapted for supporting said pan in an inclined position.

4. An apparatus of the character described comprising a frame, an axle pivotally carried thereby, a shaft journaled through said axle, a .turn table connected with said shaft, a pan arranged on said turn table, a bevel rgear carried by said turn table, a power shaft carried by said pivoted axle, a pinion carried by said power shaft and meshing with said bevel gear, said pan and turn table being adapted to assume inclined positions, and means to support said turn table and pan in inclined positions.

5. An apparatus of the character described comprising, a frame, an axle horizontally carried thereby, a shaft journaled vertically through said axle, a turn table mounted on said axle, a pan arranged on said turn table, extensible arms carried by said turn table and engaging said pan, bearing elements mounted on said axle, a power shaft carried by said bearing elements, a pinion carried by said power shaft, a bevel gear carried by said turn table and adapted for meshing with said pinion, said pan being adapted to assume an inclined position, and means to support said pan in inclined positions, said gears being adapted to retain their relative relation upon the inclination of the pan.

In testimony whereof I aifix my signature in presence of two witnesses.

OTTO V. BAUER. \Vitnesses:

F. W. Swanson, F. B. RUBY.

five cents each, by addressing the Commissioner of Patents. Washington; D. 0." 

